Chaffinch

Introduction

The chaffinch is one of the most widespread and abundant bird in Britain and Ireland, (“RSPB,” n.d.). Monitoring of the phenotype of species is important for the species and can give indication changes in phenotypic plasticity or genetic variation, (Blackburn et al. 2013).

This data looks at the differences in mass between the male chaffinch, @ref(fig: male chaffinch figure) and the female chaffinch, @ref(fig: female chaffinch figure).

Male Chaffinch, By Andreas Trepte - Own work, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=15264293

Female Chaffinch, By 4028mdk09 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=20640633

Methods

Importing and summarising the data from chaff.txt.

## # A tibble: 2 x 2
##   sex        ss
##   <chr>   <dbl>
## 1 females  86.8
## 2 males    87.9

Results

## # A tibble: 2 x 5
##   sex      mean     n    sd    se
##   <chr>   <dbl> <int> <dbl> <dbl>
## 1 females  20.5    20  2.14 0.107
## 2 males    22.3    20  2.15 0.108

Discussion

References

Blackburn, Tim M, Melanie J Monroe, Becki Lawson, Phillip Cassey, and John G Ewen. 2013. “Body Size Changes in Passerine Birds Introduced to New Zealand from the UK.” NeoBiota 17 (June): 1–18. https://doi.org/10.3897/neobiota.17.4841.

“RSPB.” n.d. https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/chaffinch/. https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/chaffinch/.